diff options
Diffstat (limited to 'sound/soc/soc-cache.c')
| -rw-r--r-- | sound/soc/soc-cache.c | 134 |
1 files changed, 133 insertions, 1 deletions
diff --git a/sound/soc/soc-cache.c b/sound/soc/soc-cache.c index 5869dc3be781..472af38188c1 100644 --- a/sound/soc/soc-cache.c +++ b/sound/soc/soc-cache.c @@ -44,6 +44,8 @@ static int snd_soc_4_12_write(struct snd_soc_codec *codec, unsigned int reg, return 0; } + dev_dbg(codec->dev, "0x%x = 0x%x\n", reg, value); + ret = codec->hw_write(codec->control_data, data, 2); if (ret == 2) return 0; @@ -112,6 +114,8 @@ static int snd_soc_7_9_write(struct snd_soc_codec *codec, unsigned int reg, return 0; } + dev_dbg(codec->dev, "0x%x = 0x%x\n", reg, value); + ret = codec->hw_write(codec->control_data, data, 2); if (ret == 2) return 0; @@ -159,7 +163,8 @@ static int snd_soc_8_8_write(struct snd_soc_codec *codec, unsigned int reg, BUG_ON(codec->volatile_register); - data[0] = reg & 0xff; + reg &= 0xff; + data[0] = reg; data[1] = value & 0xff; if (reg < codec->reg_cache_size) @@ -170,6 +175,8 @@ static int snd_soc_8_8_write(struct snd_soc_codec *codec, unsigned int reg, return 0; } + dev_dbg(codec->dev, "0x%x = 0x%x\n", reg, value); + if (codec->hw_write(codec->control_data, data, 2) == 2) return 0; else @@ -180,6 +187,7 @@ static unsigned int snd_soc_8_8_read(struct snd_soc_codec *codec, unsigned int reg) { u8 *cache = codec->reg_cache; + reg &= 0xff; if (reg >= codec->reg_cache_size) return -1; return cache[reg]; @@ -203,6 +211,8 @@ static int snd_soc_8_16_write(struct snd_soc_codec *codec, unsigned int reg, return 0; } + dev_dbg(codec->dev, "0x%x = 0x%x\n", reg, value); + if (codec->hw_write(codec->control_data, data, 3) == 3) return 0; else @@ -226,6 +236,40 @@ static unsigned int snd_soc_8_16_read(struct snd_soc_codec *codec, } #if defined(CONFIG_I2C) || (defined(CONFIG_I2C_MODULE) && defined(MODULE)) +static unsigned int snd_soc_8_8_read_i2c(struct snd_soc_codec *codec, + unsigned int r) +{ + struct i2c_msg xfer[2]; + u8 reg = r; + u8 data; + int ret; + struct i2c_client *client = codec->control_data; + + /* Write register */ + xfer[0].addr = client->addr; + xfer[0].flags = 0; + xfer[0].len = 1; + xfer[0].buf = ® + + /* Read data */ + xfer[1].addr = client->addr; + xfer[1].flags = I2C_M_RD; + xfer[1].len = 1; + xfer[1].buf = &data; + + ret = i2c_transfer(client->adapter, xfer, 2); + if (ret != 2) { + dev_err(&client->dev, "i2c_transfer() returned %d\n", ret); + return 0; + } + + return data; +} +#else +#define snd_soc_8_8_read_i2c NULL +#endif + +#if defined(CONFIG_I2C) || (defined(CONFIG_I2C_MODULE) && defined(MODULE)) static unsigned int snd_soc_8_16_read_i2c(struct snd_soc_codec *codec, unsigned int r) { @@ -326,6 +370,8 @@ static int snd_soc_16_8_write(struct snd_soc_codec *codec, unsigned int reg, return 0; } + dev_dbg(codec->dev, "0x%x = 0x%x\n", reg, value); + ret = codec->hw_write(codec->control_data, data, 3); if (ret == 3) return 0; @@ -366,6 +412,86 @@ static int snd_soc_16_8_spi_write(void *control_data, const char *data, #define snd_soc_16_8_spi_write NULL #endif +#if defined(CONFIG_I2C) || (defined(CONFIG_I2C_MODULE) && defined(MODULE)) +static unsigned int snd_soc_16_16_read_i2c(struct snd_soc_codec *codec, + unsigned int r) +{ + struct i2c_msg xfer[2]; + u16 reg = cpu_to_be16(r); + u16 data; + int ret; + struct i2c_client *client = codec->control_data; + + /* Write register */ + xfer[0].addr = client->addr; + xfer[0].flags = 0; + xfer[0].len = 2; + xfer[0].buf = (u8 *)® + + /* Read data */ + xfer[1].addr = client->addr; + xfer[1].flags = I2C_M_RD; + xfer[1].len = 2; + xfer[1].buf = (u8 *)&data; + + ret = i2c_transfer(client->adapter, xfer, 2); + if (ret != 2) { + dev_err(&client->dev, "i2c_transfer() returned %d\n", ret); + return 0; + } + + return be16_to_cpu(data); +} +#else +#define snd_soc_16_16_read_i2c NULL +#endif + +static unsigned int snd_soc_16_16_read(struct snd_soc_codec *codec, + unsigned int reg) +{ + u16 *cache = codec->reg_cache; + + if (reg >= codec->reg_cache_size || + snd_soc_codec_volatile_register(codec, reg)) { + if (codec->cache_only) + return -EINVAL; + + return codec->hw_read(codec, reg); + } + + return cache[reg]; +} + +static int snd_soc_16_16_write(struct snd_soc_codec *codec, unsigned int reg, + unsigned int value) +{ + u16 *cache = codec->reg_cache; + u8 data[4]; + int ret; + + data[0] = (reg >> 8) & 0xff; + data[1] = reg & 0xff; + data[2] = (value >> 8) & 0xff; + data[3] = value & 0xff; + + if (reg < codec->reg_cache_size) + cache[reg] = value; + + if (codec->cache_only) { + codec->cache_sync = 1; + return 0; + } + + dev_dbg(codec->dev, "0x%x = 0x%x\n", reg, value); + + ret = codec->hw_write(codec->control_data, data, 4); + if (ret == 4) + return 0; + if (ret < 0) + return ret; + else + return -EIO; +} static struct { int addr_bits; @@ -388,6 +514,7 @@ static struct { { .addr_bits = 8, .data_bits = 8, .write = snd_soc_8_8_write, .read = snd_soc_8_8_read, + .i2c_read = snd_soc_8_8_read_i2c, }, { .addr_bits = 8, .data_bits = 16, @@ -400,6 +527,11 @@ static struct { .i2c_read = snd_soc_16_8_read_i2c, .spi_write = snd_soc_16_8_spi_write, }, + { + .addr_bits = 16, .data_bits = 16, + .write = snd_soc_16_16_write, .read = snd_soc_16_16_read, + .i2c_read = snd_soc_16_16_read_i2c, + }, }; /** |